Heat-insulated receptacle.



R. HARTWIG.

HEAT INSULATED RBGEPTAGLE.

APPLIGATION FILED sBPT.13, 1911.

v1,033,771 .I Patented July 23,1912.

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RoRER'J.1 HARTWIG, 0E BERLIN, GERMANY, AssIeNoR rro THERMOSKMENGESELL- scHAET, E BERLIN, GERMANY.

HEAT-INSULATED RECEPTACLE.

insiemi.

Orginalapplication filed June 29, 1911Seria1 No. 635,971.

Serial No. 649,072.

, To all whom'it may concern:

Y by declare the following to be a full,l clear,

and exact description of the same.

The present application is a division of my application, Serial .No. 635,971, led June 29, 1911 for Letters Patent of the United States of America.

This invention relates to heat insulated receptacles of the kind consisting of two vessels placed one in the other so as to form a jacket-space which is filled. with a bad heat-conducting material. For the purpose of preventing heat from being transferred from one vessel to the other, an insulating ring or the like was placed betweenthe two vessels at the place oftransference that is, near the upper edge of the vessel.

My invention consists essentially in providing within the vessel a joint adapted to be sealed, and providing this joint with a tensioning device, comprising the insulating ring, near the upper edge of the receptacle and I prefer to arrange the tensioning device between the inner and outer bottoms of the receptacle.

Reference is to be had to the accompanying drawing forming a part of this specificat-ion in which- Figure 1 is a vertical section of an embodiment of my invention; Fig. 2 is anunderside view of the same, the outer bottom having been removed, and Fig. 3 is a transverse section on theline A-B of Fig. 1.

The improved receptacle consists substantially of the outer shell a with -the annular flange b, the inner receptacle c with the annular flange-(Z and the bottom e. f A rubber ring f or the like is arranged between the two flanges. The space between the inner and outer receptacles is lled with ground cork g. Instead of the ground cork another insulating material might be employed, for instance asbestos or glass wool. A bottom h is inserted into the outer shell a and fastened therein by riveting, soldering or in any other manner.

Between the bottoms e and 7L a tensioning Specification of Letters Patent.

. Patented July23,1912.

Divided and this applicationk filed September device is arranged fortighteningthe seal-LV ing joint between the shells a and c near the upper edge of the receptacle. To this end a llet z' is arranged below the inner botton e, and wedges Z are driven between the fillet z' and the diametricallyand oppositely arranged brackets 7c fixed on' the inner side of the outer shell a. In this way the tightening device, pressed wedges Z are secured by means of a fillet m inserted between two diametrically opposite wedges so that they cannot shift. The ends n of the fillet fm, may be for instance forked so as to partly embrace the wedges. Instead of this fillet any other suitable means may be employed for securing the wedges. The remaining space between the bottoms c and is lled with an insulating material g in the same way as the .space between the shells 0, and c. i p

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, what I claim as my invention and desire to secure by United States Letters Patent is:

1. A heat insulated. receptacle having an outer shell with an annular flange and an inner recept-acle with an annular flange, a ring between the two anges, heat insulating material in the space between the shell and inner receptacle, a tensioning device for tightening the ring 'between the flanges and heat insulating material surrounding the tensioning device, substantially as described.

2. A heat insulated receptacle having van* inner receptacle with an annular llange, al

ring 4between the two` flanges, heat insulating material in the space between the shell and inner receptacle, brackets oppositely, ar-

z'. e., the rubber ring f, is com. l between the flanges b, (Z. The l ranged and fixed on the shell and supporting a fillet, wedges between the brackets and fillet, substantially as described.

4C. A heat insulated receptacle having an outer shell with an annular ange and an inner receptacle with an annular ilange, a ring between the two flanges, heat insulating material in the spacebetween the shell 4and inner receptacle, brackets oppositely arranged and fixed on the shell and supporting a fillet, wedges between the brackets and imam fillet and heat insulating material between the bottom of the shell and receptacle surrounding the tensioning device, substantially as descrlbed.

In testimony whereof, l have signed my name to this specification in the presence of two subscribing Witnesses.

` ROBERT. HARTWIG. Witnesses:

ALFRED DROTH, WOLDEMAR HAUPL 

